Comment diagnostiquer la photosynthèse chez les plantes ?

On évalue la production d'oxygène et l'absorption de CO2 en conditions contrôlées.

Quels tests pour mesurer la transpiration des plantes ?

On utilise des pots de pesée pour mesurer la perte d'eau par évaporation.

Comment évaluer la respiration des plantes ?

On mesure la consommation d'oxygène et la production de CO2 dans un environnement fermé.

Quels indicateurs de stress hydrique chez les plantes ?

On observe le flétrissement, la décoloration des feuilles et la chute prématurée des fleurs.

Comment détecter la photosensibilité des plantes ?

On observe les mouvements des feuilles et la direction de croissance en fonction de la lumière.

Quels symptômes d'une carence en azote chez les plantes ?

Les feuilles jaunissent et se dessèchent, surtout les plus anciennes.

Comment reconnaître une carence en potassium ?

Les feuilles présentent des bords bruns et des taches nécrotiques.

Quels signes d'excès d'eau chez les plantes ?

Les racines pourrissent, les feuilles jaunissent et la plante flétrit.

Quels symptômes d'une carence en phosphore ?

Les plantes montrent un retard de croissance et des feuilles violettes.

Comment identifier un stress thermique chez les plantes ?

Les feuilles se recroquevillent, et la croissance est ralentie.

Comment prévenir les carences en nutriments ?

Utiliser des engrais équilibrés et effectuer des analyses de sol régulières.

Quelles pratiques pour éviter le stress hydrique ?

Installer un système d'irrigation et mulcher le sol pour conserver l'humidité.

Comment prévenir les maladies des plantes ?

Assurer une bonne circulation de l'air et éviter l'humidité excessive.

Quelles mesures pour éviter l'excès d'eau ?

Utiliser des pots avec drainage et éviter les arrosages excessifs.

Comment prévenir le stress thermique ?

Fournir de l'ombre et arroser les plantes pendant les périodes chaudes.

Comment traiter une carence en nutriments ?

Appliquer des engrais spécifiques selon le nutriment manquant.

Quelles solutions pour le stress hydrique ?

Augmenter l'arrosage et améliorer le drainage du sol.

Comment remédier à un excès d'eau ?

Réduire l'arrosage et améliorer l'aération du sol.

Quelles méthodes pour améliorer la photosynthèse ?

Optimiser l'éclairage et la concentration de CO2 dans l'environnement.

Comment traiter les maladies fongiques des plantes ?

Utiliser des fongicides appropriés et retirer les parties infectées.

Quelles complications d'une carence en azote ?

Peut entraîner un retard de croissance et une faible production de fruits.

Quels risques d'un excès d'eau ?

Peut provoquer la pourriture des racines et la mort de la plante.

Quelles complications d'un stress hydrique prolongé ?

Peut entraîner la défoliation et la mort des plantes.

Quels effets d'une carence en phosphore ?

Peut réduire la floraison et la fructification des plantes.

Quelles complications d'un stress thermique ?

Peut causer des brûlures foliaires et un affaiblissement général.

Quels facteurs augmentent le risque de carences ?

Un sol pauvre, une mauvaise gestion de l'eau et un manque d'engrais.

Comment le climat influence-t-il la photosynthèse ?

Des températures extrêmes et un manque de lumière peuvent réduire la photosynthèse.

Quels facteurs augmentent le stress hydrique ?

Des périodes de sécheresse prolongées et un sol mal drainé augmentent le stress.

Comment la pollution affecte-t-elle les plantes ?

La pollution de l'air et du sol peut nuire à la croissance et à la santé des plantes.

Quels facteurs de risque pour les maladies fongiques ?

L'humidité élevée et le manque de circulation d'air favorisent les maladies fongiques.

Phénomènes physiologiques des plantes - Informations médicales vérifiées

Simulation-Based Learning Combined with Case and Problem-Based Learning in the Clinical Education of Joint Surgery.

06 2023

DOI: 10.1016/j.jsurg.2023.03.001 PMID: 37032261

Traditional education of clinical training mainly relies on a single mode of lecture-based learning (LBL), in which the teacher lectures and the students listen, and the teaching effect is often unsat... Through objective evaluation of joint surgery students' theoretical knowledge and clinical skills, and subjective evaluation of teaching quality by anonymous questionnaire, the teaching effects of LBL... Sixty students who participated in the standardized training of residents in the Center for Joint Surgery, Southwest Hospital, Army University, China from March 2020 to September 2021 were selected an... The scores of theoretical knowledge, clinical skills and total score of group C were (86.40 ± 9.76), (92.15 ± 4.49), (88.70 ± 5.75) points respectively, which were significantly higher than (78.80 ± 1... SBL combined with CPBL teaching mode can effectively improve the theoretical knowledge and clinical skills of the students, which could improve self-assessment and teaching satisfaction rate, and is w...

Humans Educational Measurement Educational Status Learning Problem-Based Learning +1 autres

Perceptions of medical students at Najran University on the effectiveness of problem-based learning and team-based learning.

16 Oct 2024

DOI: 10.1186/s12909-024-06148-w PMID: 39407260

Team-based learning (TBL) and problem-based learning (PBL) are two effective educational approaches used in medical education for increasing knowledge acquisition, learning motivation, and collaborati... The present study aimed to evaluate the perceptions of current or previous preclinical students at the College of Medicine, Najran University (NU) about the effectiveness of PBL and TBL and to assess ... A cross-sectional survey was conducted on 106 preclinical students at NU, Saudi Arabia. The survey questionnaire was validated by a pilot study and designed based on Kirkpatrick's evaluation model. De... 73.6% of participants enjoyed PBL and found it motivating compared to TBL and classic lectures. PBL was reported as more effective for knowledge acquisition (50%), teamwork (62.3%), and high academic ... It is concluded that PBL was more favored by the students regarding the learning outcomes. TBL was reported to need more individual preparation and effort and require lecturer involvement, suggesting ...

Humans Problem-Based Learning Students, Medical Saudi Arabia Cross-Sectional Studies +9 autres

Effectiveness of tutor shadowing on faculty development in problem-based learning.

22 Jul 2022

DOI: 10.1186/s12909-022-03615-0 PMID: 35869547

To enhance tutors' teaching skills, tutor shadowing for novice tutors of problem-based learning (PBL) in addition to conventional faculty development (FD) was applied. This study aimed to develop a tu... This study employed a before-and-after study design with three phases. In phase 1, a TS-scale was elaborated. A validity examination was performed in phase 2. Phase 3 was a study of the effectiveness ... A TS-scale with a 32-item questionnaire of self-rated confidence for PBL tutors was identified in phase 1. In phase 2, 7 experienced specialists in medical education were invited to evaluate the conte... Novice PBL tutors benefit from FD that incorporates tutor shadowing in the 3 key domains of tutoring competencies. The TS-scale developed in this study can be applied in future research on FD design....

Education, Medical Education, Medical, Undergraduate Faculty Humans Problem-Based Learning +2 autres

The Role of Problem-Based Learning Approach in Teaching and Learning Physics: A Systematic Literature Review.

2023

DOI: 10.12688/f1000research.136339.2 PMID: 37970065

Problem-based learning (PBL) is a learner-centered method in which complex real-world problems are used to stimulate students thinking and problem-solving abilities during the teaching and learning pr...

Humans Problem-Based Learning Learning Problem Solving Curriculum +1 autres

Effects of Problem-Based Learning on the Problem-Solving Ability and Self-Efficacy of Students Majoring in Dental Hygiene.

18 06 2022

DOI: 10.3390/ijerph19127491 PMID: 35742736

This study developed a problem-based learning (PBL) module to improve integrated thinking and problem-solving ability in students of dental hygiene. After applying PBL, the study tested the improvemen...

Humans Oral Hygiene Problem Solving Problem-Based Learning Self Efficacy +1 autres

The effectiveness of problem-based learning compared with lecture-based learning in surgical education: a systematic review and meta-analysis.

01 Aug 2023

DOI: 10.1186/s12909-023-04531-7 PMID: 37528406

This meta-analysis was conducted to systematically evaluate the impact of problem-based learning (PBL) and lecture-based learning (LBL) teaching models on students' learning in surgical education.... We systematically searched the publications related to the application of PBL and LBL in surgical courses in PubMed, Embase, Web of Science and Cochrane Library databases, the last retrieval time is S... Nine studies were included totally. The results showed that compared with LBL, PBL was superior in clinical competence (SMD = 0.81, 95% CI: 0.12 ~ 1.49, P = 0.020) and student satisfaction (SMD = 2.13... This study showed that the PBL teaching model is more effective than the LBL teaching model in surgical education on the aspects of enhancing clinical competence and student satisfaction. However, fur...

Humans Problem-Based Learning Educational Measurement Students Education, Medical +1 autres

Application of problem based learning (PBL) and case based learning (CBL) in the teaching of international classification of diseases encoding.

14 09 2023

DOI: 10.1038/s41598-023-42175-1 PMID: 37709817

To study the application of PBL combined with CBL teaching mode in the teaching of international classification of diseases (ICD) encoding, so as to improve students' grasp of ICD encoding knowledge. ...

Humans Problem-Based Learning International Classification of Diseases Students Academic Success +1 autres

Implementation of problem-based learning modules in an introduction to public health course.

2024

DOI: 10.3389/fpubh.2024.1405227 PMID: 39005993

With traditional lecture-based learning methods often criticized for their limited ability to foster critical thinking and cognitive engagement, problem-based learning (PBL) has emerged as a promising... PBL was implemented in an undergraduate public health course at a private university in the southeast US. The study was conducted in the Spring of 2022 using a convergent mixed-methods approach. Quant... Results indicated significant improvements in student communication skills, growth mindset, and metacognitive abilities across the semester. The thematic analysis of qualitative responses corroborated... The findings contribute to the growing body of evidence supporting PBL and offer practical insights for implementing PBL in public health education. The study also highlights the need for institutiona...

Humans Problem-Based Learning Public Health Surveys and Questionnaires Curriculum +4 autres

Measuring group function in problem-based learning: development of a reflection tool.

10 Oct 2023

DOI: 10.1186/s12909-023-04726-y PMID: 37817205

Problem-based learning (PBL) is a pedagogy involving self-directed learning in small groups around case problems. Group function is important to PBL outcomes, but there is currently poor scaffolding a... Tool development unfolded in four steps: 1) a literature review was conducted to identify existent evaluation tools for group function in PBL, 2) literature findings informed the development of this n... Nineteen scales relating to group function assessment were identified in the literature, lending 18 constructs that mapped into four dimensions: Learning Climate, Facilitation and Process, Engagement ... A four-dimension tool to assist group function reflection in PBL was produced. Its constructs were well supported by literature and experts. Faculty and student stakeholders acknowledged the utility o...

Humans Curriculum Education, Medical, Undergraduate Learning Problem-Based Learning +1 autres

The effectiveness of problem based learning in improving critical thinking, problem-solving and self-directed learning in first-year medical students: A meta-analysis.

2022

DOI: 10.1371/journal.pone.0277339 PMID: 36413532

The adaptation process for first-year medical students is an important problem because it significantly affects educational activities. The previous study showed that 63% of students had difficulties ... We searched PubMed, ScienceDirect, Cochrane, and Google Scholar databases until June 5, 2021. Search terms included problem-based learning, effectiveness, effectivity, and medical student. We excluded... Seven eligible studies (622 patients) were included. The pooled analysis demonstrated no significant difference between PBL with conventional learning method in critical thinking/knowledge assessment ... The present study concluded that the PBL approach in first-year medical students appeared to be ineffective in improving critical thinking/knowledge, problem-solving, and self-directed compared with t...

Humans Problem-Based Learning Students, Medical Thinking Problem Solving +1 autres

Phénomènes physiologiques des plantes : Questions médicales fréquentes

Termes MeSH sélectionnés :

Questions fréquentes et termes MeSH associés

Diagnostic 5

Symptômes 5

Prévention 5

Traitements 5

Complications 5

Facteurs de risque 5

Contenu validé par Dr Olivier Menir

Sous-catégories

Résistance à la sécheresse

Gamétogenèse de plante

Perception de la gravité

Organogenèse des plantes

Parthénogenèse

Photosynthèse

Défense des plantes contre les herbivores

Développement des plantes

Maladies des plantes

Dispersion des plantes

Immunité des plantes

Stérilité des plantes

Nodulation racinaire

Techniques d'embryogenèse somatique végétale

Transpiration des plantes

Pollinisation

Dispersion des graines

Autofécondation

Auto-incompatibilité chez les plantes à fleurs

Tropisme

Apomixie

Métabolisme acide crassulacéen

Photophosphorylation

Étiolement

Germination

Sénescence des plantes

Maladie à phytoplasme

Nécrose et chlorose des plantes

Tumeurs végétales

Résistance à la maladie

Résistance systémique induite des plantes

Gravitropisme

Phototropisme

Dormance des plantes

Auteurs principaux

Sources (10000 au total)